As an example...
Success/failure. Roll 1d10, succeed on a 5+.
Advantage/threat. Roll 1d6-1d6. A positive result is Advantage; a negative result is Threat.
Triumph. Roll 1d4-1. A non-zero result is counted as Triumph.
Disaster. Roll 1d4-1. A non-zero result is counted as Disaster.
A dice pool system with five normal dice. Chances are good if you're on this site you already have enough dice to use this system. I literally have the dice to do this sitting on my desk. As long as the d6s and d4s are different colors, you can make one roll and know without much work the same things you could with several sets of custom dice that you'll have to learn the symbols for and translate into a result.
I really hope Matt's team talks him down from specialty dice. But, even if they don't, I'll still check it out.